Ball Lock Ejector Punches Heavy Duty XNT DayTiN® Coating

These heavy-duty ball lock ejector punches are used inside precision press and progressive die tooling where reliable part ejection and positive ejector retention are required. The ball lock mechanism helps keep the punch indexed in the die block, reducing the risk of shifting during repeated cycling and die opening.

• Automotive connector and terminal press dies: Select the heavy-duty variant to support stable blanking and consistent ejector motion under demanding cycle counts.
• Electronics and thin-gauge stamping: The ability to match tip shapes (H, J, K, L, N, O, R, V, X, Y, Z) helps designers control contact geometry for smoother part release without overstressing the carrier area.
• Industrial transfer tooling: Use the XNT DayTiN® coated punches where sliding/abrasive wear is expected, improving long-life performance through improved surface wear resistance.

This configuration—ball lock retention plus the XNT DayTiN® surface—makes the punches especially suited for dies that require dependable ejection with long service intervals.

This series is offered in M2 and PS4 tool steel options. M2 is commonly selected for die and punch applications that benefit from high hardness and wear resistance; it is typically used in a quenched & tempered state after machining and finishing. PS4 provides an alternative tool steel choice where designers want a different balance of toughness-to-wear performance for stamping environments.

• XNT DayTiN® coating (applied on the finished punch): increases surface wear resistance to help maintain ejection performance over long production runs.
• Hardness & trade-offs: Higher hardness steels improve abrasion resistance, but can reduce impact toughness if not balanced by the heat treatment and geometry.

For abrasive, high-cycle stamping, pairing M2 with the DayTiN® surface is often advantageous; for tooling that prioritizes durability with different wear characteristics, PS4 can be selected based on the press duty and ejection load profile.

Choose the ejector punch dimensions so the shank and point geometry match both the die block pocket and the part-release contact area. Start with D (shank diameter) = 10 to 40 mm and ensure the die block’s ball-lock housing accepts the punch without excessive clearance. Next, select L (overall length) within the available ranges—63–100, 63–125, 71–125, or 80–125—so the punch fully engages the retention feature and provides sufficient stroke for ejection.

• Point length L1 (mm): 10–19, 13–25, 19–30, or (noted) 13–25 depending on the configuration; match L1 to the required contact penetration and clearance to surrounding parts.
• Tip shape: pick from H, J, K, L, N, O, R, V, X, Y, Z to align contact geometry with the part surface.
• Cross-section parameters: use P = 1.5–12 mm and W = 1.5–14 mm to fit the designed contact profile.

Tolerance/fit should be managed through die housing machining to prevent rattle while avoiding binding; verify that the chosen D and L do not interfere with die components throughout the full press stroke.